Now fixed upstream:
commit d3c87884927e6b745d0a5680e6d94a40c4f484f7
Author: Ján Tomko <jtomko@redhat.com>
AuthorDate: 2013-06-24 14:18:14 +0200
Commit: Ján Tomko <jtomko@redhat.com>
CommitDate: 2013-06-24 14:18:14 +0200
qemu: check if block I/O limits fit into long long
We can only pass values up to LLONG_MAX through JSON
and QEMU checks if the int64_t number is not negative
at startup since 1.5.0.
https://bugzilla.redhat.com/show_bug.cgi?id=974010
git describe: v1.0.6-120-gd3c8788